13395681 has 12 divisors (see below), whose sum is σ = 20837908. Its totient is φ = 8243424.

The previous prime is 13395673. The next prime is 13395691. The reversal of 13395681 is 18659331.

It is a happy number.

13395681 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2005056 + 11390625 = 1416^2 + 3375^2 .

It is not a de Polignac number, because 13395681 - 2³ = 13395673 is a prime.

It is a super-2 number, since 2×13395681² = 358888538907522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13395601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57130 + ... + 57363.

Almost surely, 2^13395681 is an apocalyptic number.

It is an amenable number.

13395681 is a deficient number, since it is larger than the sum of its proper divisors (7442227).

13395681 is a wasteful number, since it uses less digits than its factorization.

13395681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114512 (or 114509 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 13395681 is about 3660.0110655570. The cubic root of 13395681 is about 237.4952523520.

It can be divided in two parts, 133956 and 81, that multiplied together give a square (10850436 = 3294²).

The spelling of 13395681 in words is "thirteen million, three hundred ninety-five thousand, six hundred eighty-one".